Cree's tests for the R&D device showed that the LED produced 197 lumens of light output and achieved 186 lumens per watt efficacy at a correlated color temperature of 4577K. The tests were conducted under standard LED test conditions at a drive current of 350mA, at room temperature. Cree says the 186 lumens/W is the highest in the industry to date. In the past, Cree has said that it generally takes only about 12 months before a lab-level LED is commercialized; Early 2011 for a product version?